Planetary hours
in Grenoble.
The day, from sunrise to sunset, is cut into twelve equal hours; so is the night, from sunset to the next sunrise. Each hour carries a planet, in the Chaldean order. A planetary hour therefore lasts 60 minutes only at the equinoxes: it all depends on the date and the city. Here are the exact hours for your city; what you do with them is up to you.
Planetary day of Wednesday, 8 April 2026: day of Mercury
- Sunrise
- 07:05
- Sunset
- 20:13
- Next sunrise
- 07:03
A day hour lasts 1h 06m; a night hour, 54 min. Local time (Europe/Paris).
Day
- 1☿︎ Mercury07:05 – 08:10
- 2☽︎ Moon08:10 – 09:16
- 3♄︎ Saturn09:16 – 10:22
- 4♃︎ Jupiter10:22 – 11:27
- 5♂︎ Mars11:27 – 12:33
- 6☉︎ Sun12:33 – 13:39
- 7♀︎ Venus13:39 – 14:45
- 8☿︎ Mercury14:45 – 15:50
- 9☽︎ Moon15:50 – 16:56
- 10♄︎ Saturn16:56 – 18:02
- 11♃︎ Jupiter18:02 – 19:08
- 12♂︎ Mars19:08 – 20:13
Night
- 1☉︎ Sun20:13 – 21:07
- 2♀︎ Venus21:07 – 22:02
- 3☿︎ Mercury22:02 – 22:56
- 4☽︎ Moon22:56 – 23:50
- 5♄︎ Saturn23:50 – 00:44
- 6♃︎ Jupiter00:44 – 01:38
- 7♂︎ Mars01:38 – 02:32
- 8☉︎ Sun02:32 – 03:26
- 9♀︎ Venus03:26 – 04:20
- 10☿︎ Mercury04:20 – 05:14
- 11☽︎ Moon05:14 – 06:09
- 12♄︎ Saturn06:09 – 07:03
Other cities · France
Questions
How are the planetary hours calculated in Grenoble?
On Wednesday, 8 April 2026, the Sun rises at 07:05 and sets at 20:13: the day lasts 13h 09m, that is twelve day hours of 1h 06m. The night, until the next sunrise at 07:03, lasts 10h 49m: twelve night hours of 54 min.
Which planet rules the first hour that day?
Mercury, from 07:05 to 08:10: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: the Moon, Saturn, Jupiter, Mars, the Sun, Venus, then Mercury again.
Today’s sky, on YOUR chart
Planetary hours are the same for everyone in a city. Your chart is yours alone: every morning AstroXP crosses the real sky with your birth, to the minute, and tells you what time it plays out for you.
On a computer? Scan this code with your phone.
Calendars
Sunrise and sunset calculated for the city (the Sun’s centre 0°50′ below the horizon: refraction and semi-diameter), local time of the city’s time zone. Checked against astronomy-engine, the app’s engine.